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Science Benchmark 2 Review
Test Description: Use these games to review for your benchmark.
Instructions: Answer all questions to get your test result.
1) A bacterial cell divides in half to make another organism. This is a type of
A
asexual reproduction
B
egg and sperm joining
C
sexual reproduction
D
an allele combination
2) Most of the life of any cell is spent in a period of growth called
A
interphase
B
prophase
C
anaphase
D
telophase
3) The chromosomes in the nucleus of a cell contain a genetic code known as
A
meiosis
B
DNA
C
mitosis
D
the key code
4) Which of the following bases does not belong in DNA
A
adenine
B
uracil
C
thymine
D
cytosine
5) During _____, the nuclear membrane breaks down into pieces the chromosomes are visible.
A
meiosis
B
regeneration
C
sexual reproduction
D
prophase
6) A punnett square shows you all the ways in which ____ can combine.
A
alleles
B
eggs
C
color
D
sperm
7) Mendel called plants that received different alleles for a trait from each parent ___.
A
dominant
B
hybrids
C
purebred
D
phenotypes
8) In a punnett square, a capital letter stands for a ___ allele.
A
heterozygous
B
dominant
C
recessive
D
homozygous
9) Of the following, which represents a homozygous recessive genotype?
A
Tt
B
TT
C
tt
D
tTt
10) In DNA base pairing, adenine is to _____, as guanine is to _____.
A
guanine, adenine
B
cytosine, thymine
C
guanine, thymine
D
thymine, cytosine
11) A heterozygous parent is crossed with a homozygous recessive parent. What is the probability that the offspring will be homozygous recessive?
A
50%
B
100%
C
75%
D
25%
12) The Father of Genetics
A
Anton Van Leewenhoek
B
Gregor Mendel
C
Schwann
D
Robert Hooke
13) What is the allele combination for the female gender?
A
XX
B
Aa
C
XY
D
AA
14) What is the allele combination for the male gender?
A
Aa
B
XX
C
XY
D
AA
15) What is the genotype of a person with homozygous brown eyes? Hint: Brown is dominant!!!
A
bb
B
Brown carrying a blue allele
C
Bb
D
BB
16) Organisms with two different alleles for a trait
A
phenotype
B
heterozygous
C
genotype
D
homozygous
17) Physical appearance of an organism
A
homozygous
B
heterozygous
C
phenotype
D
genotype
18) Organisms with two identical alleles for a trait
A
genotype
B
homozygous
C
phenotype
D
heterozygous
19) Genetic makeup of an organism
A
homozygous
B
heterozygous
C
phenotype
D
genotype
20) A tool that shows the probability for a trait in the offspring
A
allele
B
dominant allele
C
recessive allele
D
Punnett Square
*select an answer for all questions
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